Declarative processing for computer games (2008)

Yeah; sometimes you can find a pre-print, local institution earlier version, etc., but if you want to read it on the ACM you've got to e.g. join it and get a Digital Library subscription for around $200/year (there are probably other options).

I'm thinking hard about this in the medium future for a project I'm working on, but for now ... well, since some time in the late '90s or so I couldn't justify the ACM membership (then again, that was a Dark Age for programming languages, my only academic CS area of interest).